Who needs gastroscopy? If you have the following conditions, it is recommended to go to a regular hospital for gastroscopy: 1, frequent difficulty in swallowing, pain in the upper abdomen, non-stop burping, acid reflux, obvious feeling of fullness; 2, unexplained vomiting of blood, black-colored stools, unexplained abdominal pain (repeated pain and unclear location), combined with medical history, it is recommended to consider gastroscopy together; 3, cirrhosis and other diseases need to improve the esophagus, the Patients with diseases such as liver cirrhosis need to improve the evaluation of complications such as esophagus and fundus; 4. Patients who need regular follow-up after surgery for upper gastrointestinal tract tumors such as gastric cancer and esophageal cancer; 5. High-risk groups for gastric cancer: patients whose immediate family members have had gastric cancer and whose previous examinations showed high-risk factors need regular gastroscopy for timely detection of early gastric cancer; 6. Gastric cancer screening for healthy people: current guidelines and related studies believe that gastroscopy can increase the diagnosis of gastric cancer, but not reduce the number of deaths caused by gastric cancer. It is also not recommended as a screening program for gastric cancer in Japan; in terms of individual, it needs to be decided in combination with symptoms, economic conditions and psychological acceptance.